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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc
** All rights reserved.
** For any questions to Digia, please use contact form at http://qt.digia.com
**
** This file is part of the QtDataVisualization module.
**
** Licensees holding valid Qt Enterprise licenses may use this file in
** accordance with the Qt Enterprise License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.digia.com
**
****************************************************************************/
#include "q3dwindow.h"
#include "q3dwindow_p.h"
#include "abstract3dcontroller_p.h"
#include <QGuiApplication>
#include <QOpenGLContext>
#include <QOpenGLPaintDevice>
#include <QPainter>
#include <QDebug>
QT_DATAVISUALIZATION_BEGIN_NAMESPACE
/*!
* \class Q3DWindow
* \inmodule QtDataVisualization
* \brief The Q3DWindow class provides a window and render loop.
* \since Qt Data Visualization 1.0
*
* This class creates a QWindow and provides render loop for visualization types inheriting it.
* \warning This class is not intended to be used directly by developers.
*
* \sa Q3DBars, Q3DScatter, Q3DSurface, {Qt Data Visualization C++ Classes}
*/
/*!
* Constructs Q3DWindow with \a parent. It creates a QWindow and an OpenGL context. It also sets
* surface format and initializes OpenGL functions for use.
*/
Q3DWindow::Q3DWindow(QWindow *parent)
: QWindow(parent),
d_ptr(new Q3DWindowPrivate(this))
{
setSurfaceType(QWindow::OpenGLSurface);
QSurfaceFormat surfaceFormat;
surfaceFormat.setDepthBufferSize(16);
#if !defined(QT_OPENGL_ES_2)
surfaceFormat.setSamples(8);
surfaceFormat.setRenderableType(QSurfaceFormat::OpenGL);
#else
surfaceFormat.setRenderableType(QSurfaceFormat::OpenGLES);
#endif
surfaceFormat.setSwapBehavior(QSurfaceFormat::DoubleBuffer);
setFormat(surfaceFormat);
create();
d_ptr->m_context->setFormat(requestedFormat());
d_ptr->m_context->create();
d_ptr->m_context->makeCurrent(this);
qDebug() << "initializeOpenGLFunctions()";
initializeOpenGLFunctions();
const GLubyte *version = glGetString(GL_VERSION);
qDebug() << "OpenGL version:" << (const char *)version;
version = glGetString(GL_SHADING_LANGUAGE_VERSION);
qDebug() << "GLSL version:" << (const char *)version;
#if !defined(QT_OPENGL_ES_2)
// If we have real OpenGL, GLSL version must be 1.2 or over. Quit if not.
QStringList splitversionstr = QString::fromLatin1((const char *)version).split(QChar::fromLatin1(' '));
if (splitversionstr[0].toFloat() < 1.2)
qFatal("GLSL version must be 1.20 or higher. Try installing latest display drivers.");
#endif
renderLater();
}
/*!
* Destroys Q3DWindow.
*/
Q3DWindow::~Q3DWindow()
{
}
/*!
* \internal
*/
void Q3DWindow::setVisualController(Abstract3DController *controller)
{
d_ptr->m_visualController = controller;
}
/*!
* \internal
*/
void Q3DWindow::handleDevicePixelRatioChange()
{
if (QWindow::devicePixelRatio() == d_ptr->m_devicePixelRatio || !d_ptr->m_visualController)
return;
// Device pixel ratio changed, resize accordingly and inform the scene
d_ptr->m_devicePixelRatio = QWindow::devicePixelRatio();
d_ptr->m_visualController->updateDevicePixelRatio(d_ptr->m_devicePixelRatio);
}
/*!
* \internal
*/
void Q3DWindow::render()
{
handleDevicePixelRatioChange();
d_ptr->m_visualController->synchDataToRenderer();
d_ptr->m_visualController->render();
}
/*!
* \internal
*/
void Q3DWindow::renderLater()
{
if (!d_ptr->m_updatePending) {
d_ptr->m_updatePending = true;
QCoreApplication::postEvent(this, new QEvent(QEvent::UpdateRequest));
}
}
/*!
* \internal
*/
bool Q3DWindow::event(QEvent *event)
{
switch (event->type()) {
case QEvent::UpdateRequest:
renderNow();
return true;
case QEvent::TouchBegin:
case QEvent::TouchCancel:
case QEvent::TouchUpdate:
case QEvent::TouchEnd:
d_ptr->m_visualController->touchEvent(static_cast<QTouchEvent *>(event));
return true;
default:
return QWindow::event(event);
}
}
/*!
* \internal
*/
void Q3DWindow::exposeEvent(QExposeEvent *event)
{
Q_UNUSED(event);
if (isExposed())
renderNow();
}
/*!
* \internal
*/
void Q3DWindow::renderNow()
{
if (!isExposed())
return;
d_ptr->m_updatePending = false;
d_ptr->m_context->makeCurrent(this);
render();
d_ptr->m_context->swapBuffers(this);
}
Q3DWindowPrivate::Q3DWindowPrivate(Q3DWindow *q)
: q_ptr(q),
m_updatePending(false),
m_context(new QOpenGLContext(q)),
m_visualController(0),
m_devicePixelRatio(1.f)
{
}
Q3DWindowPrivate::~Q3DWindowPrivate()
{
}
QT_DATAVISUALIZATION_END_NAMESPACE
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